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2. 7-Zip - Wikipedia

   en.wikipedia.org/wiki/7-Zip

   7-Zip is a free and open-source file archiver, ... A 64-bit version is available, with support for large memory maps, leading to faster compression. All versions ...

3. 7z - Wikipedia

   en.wikipedia.org/wiki/7z

   7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. The 7z format initially appeared as implemented by the 7-Zip archiver. The 7-Zip program is publicly available under the terms of the GNU Lesser General Public License.

4. ZIP (file format) - Wikipedia

   en.wikipedia.org/wiki/ZIP_(file_format)

   A ZIP file may contain one or more files or directories that may have been compressed. The ZIP file format permits a number of compression algorithms, though DEFLATE is the most common. This format was originally created in 1989 and was first implemented in PKWARE, Inc. 's PKZIP utility, [2] as a replacement for the previous ARC compression ...

5. List of file signatures - Wikipedia

   en.wikipedia.org/wiki/List_of_file_signatures

   List of file signatures. This is a list of file signatures, data used to identify or verify the content of a file. Such signatures are also known as magic numbers or Magic Bytes. Many file formats are not intended to be read as text. If such a file is accidentally viewed as a text file, its contents will be unintelligible.

6. WinZip - Wikipedia

   en.wikipedia.org/wiki/WinZip

   WinZip 1.0 was released in April 1991 as a Graphical User Interface (GUI) front-end for PKZIP. [5]Former WinZip icon. From version 6.0 until version 9.0, registered users could download the newest versions of the software, enter their original registration information or install over the top of their existing registered version, and thereby obtain a free upgrade.

7. Comparison of file archivers - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_file_archivers

   Information about what archive formats the archivers [a] can write and create. External links lead to information about support in future versions of the archiver or extensions that provide such functionality. Note that gzip, bzip2 and xz are compression formats rather than archive formats. File archivers. ZIP.

8. Lempel–Ziv–Markov chain algorithm - Wikipedia

   en.wikipedia.org/wiki/Lempel–Ziv–Markov_chain...

   Lempel–Ziv–Markov chain algorithm. The Lempel–Ziv–Markov chain algorithm (LZMA) is an algorithm used to perform lossless data compression. It has been under development since either 1996 or 1998 by Igor Pavlov [1] and was first used in the 7z format of the 7-Zip archiver. This algorithm uses a dictionary compression scheme somewhat ...

9. Base64 - Wikipedia

   en.wikipedia.org/wiki/Base64

   Base64. In computer programming, Base64 is a group of binary-to-text encoding schemes that transforms binary data into a sequence of printable characters, limited to a set of 64 unique characters. More specifically, the source binary data is taken 6 bits at a time, then this group of 6 bits is mapped to one of 64 unique characters.